Bulk Synchronization action allows to trigger Create Remote Action Issue action for many issues from filter. (This functionality is provided only in IssueSYNC for JIRA Server).

Use this option to propagate existing issues to the remote JIRA:

• When IssueSYNC plugin was installed when you already had issues matching the contract that needs to be replicated.
• To push old/historical issues.
• Archive issues from time to time on different JIRA instance.

 Only Issues with Create Remote button can be synchronized by Bulk Synchronization.